Glass-drawing apparatus.



f www 1 0. E. MAXNARD.

GLASS DRAWING APPARATUS.

'APPLICATION IILBD IUJB 7! 1912.

1,114,898. `Patented 0t.27,1914.

2 SHEBTSSHEET 2. I

WITNESSES enteras anni* ritten.. iA

@LIU/ER E. MAYNARI), OF ARNOLD, PENNSYLVANIA, ASSIGNOR TO `VVIN'IDOW' :MACHINE COMPANY, OE PITTSBURGH, PENNSYLVANIA, A CORPORATlON MOF NEW? JERSEY.

GLASS-DRAVING APPARATUS.

Patented oet. 2jr, 1914.

To all yiti/ tom tmf/y concern .le 1t known that l, (haven E. l\l.Y\YNAaD, a resident ot' Arnold, in the county of ,lilfestmoreland and State of Pennsylvania, have invented an Improved Glass-Drawing` Apparatus, oil" which the following` is a full, clear, and exact description, reference heilig had to the accompanying drawings, forming part ot' this speciii'fation, in which- Figure l is a side elevation showingone iorrn of apparatus constructed in actmrdance with my invention, partly broken away. Fig'. 2 'is a detail. end elevation ot the drum. litiga 3 is a partial top plan view, and Figs. 4t, 5 and (i are detail views on a larger scale, hereinafter referred to.

My invention relates to the automatic forming of the cap in the drawing ol cylinders andis designed to improve upon the apparatus shown and claimed in my copeudinu' application Serial No. (355,309, filed .lune 30th, 1.911.

'.lhe general ohject of the present inven- 'tion is to sii'npli'liy, rheapen and improve the apparatus -tor the automatic 't'orunxtion of the cap.

lathe drawings,in which I show the in- `ventioiii as applied to the apparatus usually 4employed in drawing window glass cylinders, represents an electric motor having itsl shalt provided with a worm which drives a worin wheel 3 on 'the shaft 4. To t-his shaft is fixed a pinion 5 intermeshintrv with toothed wheel G on the shaft (3 which shaft also carries a pinion iiitcrmeshingl with toothed wheel l on the shaft S of the wind ing' drum. On'the drum 9 of shatt 8 winds the cable or flexible connection l() hy which the cage or elevator device carrying' the .blow pipe or loait 'is'.cari'ietl.

This drum 9 comprises a winding portion l-l of relatively smaller diameter and atapered conical portion 1Q of larger diameter, these parts being connected hy-a curved portion 13 of rapidly increasing diameter. These parts are grooved in the usual manner to receive the cable.y which is secured to the smaller drum portion. The smaller portion ll and the portion 153 ct rapidly increasing diameter are used during the forming of the neck and cap, th(I cahle winding on the gradually enlarging tapered portion l2 during the drawino otV the cylinder proper. The object of this conical form 'for the main drum is to slightly increase the speed during drawing' ot' the cylinder to compensate for the gradual cooling.; and sti'lening of the glass,`

In carrying out my,invention,A I provide a valve lft n the air supply pipe lleading to the telescopic pipe system forthebait or hlow pipe.` The lever fined to the stem of this` valve is connected preferably through insulation, shown at 17, to theportion Y1S4 olf a threespart rod or bar, the middle part 19 telescopingr over 18 and heilig securedwhen adjusted hv set-screw 20,l ouin/,any-

other desirable manner. `The portion 19 also adjusts over the third portion of the rod or har and is similarly secured hy set-serew, and this portion 21 of the bar carries on'its lower side a rack which normally en- ,ez-iges a i,iinion 23 on a short shaft Qt'loeated hele-w the drum shaft. The drum shaft is provided with a small pinion 25 intern'leshino; with toothed wheel 26 on the shaft 24: which carries the' pinion 23, as shown in Fig. Ll, thus drivingthe pinion shaft. Fixed to the shaft 2t is an arm 27,4 having adjustahly secured in a slot thereof a laterally proliectinal lifting pin Q8, which. may or may not have a loose roller or sleevethereon. The pin Q8 projects laterally so `as to engage the recess Ill ol a shifter block 29, which is adjustahly secured to the rack Qlhy set screw SO` The arm will rotate in an anti-clockwise direction during lifting.,r of the hait and at the proper time will engage the recess in the shifter hloek and lift, the rack free/from the pinion and' carry it rapidly toward the left, thus giving arapid openingi movement after the neck is torl'ned. The latter portion of this movement is shown inllig.` 2. As the arm passes down to theleit, therack again comes into engagement with its pinion, thus resuming the slow gradual opening'ot the valve. From this point on,` through the draw, the valve will he `actuated"solely hy` the rack and pinion connection as the pin Q8 will not again come intoengagcment' with the recess ,of the shifter block until the hait is lowered for theiiextdraw, when it will carry the block hack to its original position. During the downward movement of the drawing cage or` elevated, the winding drumr 9 and its gearing is rotated in the opposite direction,'thereby moving the rigid har in the reverse direction, a portion of 30 of draw to. ,dravv4 the .glass 'thinner-in theif this vmovement being eected `as in 'the rerack'- and pinion for; forming rapidl'y increasing' thespeeclof movement of 32,vvliich is adjustably vs'ecuri'id. to an arm to vpartially eounterbalance tiievalve move- -and'carrylitover rapidly .towardtl'ije left,`

igiiziea i .lsaid rigid period and for thereafter-'more Slowly .niovf-- verse' movement Vvbyir'ieans of. the shifting ving said rigid memberj; sub

block 'and arm.

In vconn ecti' infi vvitli"the valve -:sy-Steur.- scribed v shown', l pre-fera'bly' employ -afcountervveight t 2. xln glassdravving apparatus, an 'air '33, fixedgto the valve lever. Thisvis merely gearing .ments and make them `easier.

crease I'n'theuse of the aparatus at the'begmlmember .throng substantially :as

3L Glass-drawing;

describedfff e...

' apparatus, `-i"comprisin'g n'uost--` nearly closed4`v position .slightly open. As' tl'ie cable-` Wi ds on.tlie'smallerfportion l1' of 'the drum, the. thickv lieay'vy glass neck need. diaIIieterl vvvill beformed andduring-tliis movement the racklv Willjloev moved .to theleft inv Fig. ',1. 4 'At the proper. momenmned by 'adjusting Ithe parts, the pin QSWilljfengage the recess inv thesliifterblockra'nd lift the rack away from' itsV pinion ply, an air' valvefcontrolling saidsupp rigid rod'or bar member v'connected vtoi- .'v'algve and.. meval-ile to open].a ridj c' same; connections from' the l liftin mecha- Vnism .foreiiecting the' movement o 'said rod 'or lbar'," and' other! meQhanism-I the operate upon` said cor ine'c'tions` to speed of fthrough..

tiajlly as described.v

-ra l as 'shown vin Fig. 2'. During this: movement, p the rack v'villbe carried to the left ajniueli greater distance than i"vvould becarriedby its pinion," and consequently, thevalveivvill: `be 'suddenly and rap :the glass'to the'size'desired for the cylinder.: a rack," gearing connected '.yvith.4 .the main., 'Immediately `after checap isformed, the lioistingdruniand arrangedijto actuate the."

. rack, and mechanisme' for disengag-ing' the vhoistingcable'jbegins'to Wind on tlie inter-- mediate portion l3,t h'us increasing the'speed-- rapidly substantially las described.

through... af predetermined periodi; 'cylinder' jiio'per,l =.From 'this-time on, there. is a slow. gradual' increase inl the speed "of draw, together wit-lia slow' vgrad-ual opening oi? theairvalve corresponding thereto,fthe

' having. been ,brought-into mech anism having la hoisting drum, an #arr rack-connected .to the valve, vgearing for the lie rack,y a 'connec-4 rengageme nt. i hoisting dr-ug'engaging't The' advantagesbf myinvention result from the simplicity, cheapness and eEectivej nessof-tiie' type of Vapparatus sh'ovvri", "The, parte are reduced in number over the parts ,tlirougli a predetermined. period' and then member vfor a fixed predetermined Stantially as de' a j predetermined period y5.kiln'.glass'r-drauing. apparatus, :a i,

tion between thev rack and tlievalve,v and anl v 1G93 age the rack' and vgear valve, Iarigid member connected tovtheivalve, for.l actuating said member, and:- Supplemental i niechanism arranged', to' giur` 'thev speed of.'increment ofthe 70 'l lose Athe d "so 'through 'saidfconnectOIlSfv arranged to; 'act ly increase the "movement of the, rodioi'l "bar, a predetermined "period-g substan'- Il.' In glass-'drawing i-apparatus, I n: aiif g idly opened to swell outl i valve,;a bar connected Withthe valve aviiig--.

rack and gearing and movingl the rack more-i' 9j5 supply, avalvecfmtrollingsaid supply, a

of my former apparatus, 'tlie'apparatus 'is falloiv tliemgtorengage eachother', vsaid' arm lvnot as liable to get `out of order, and the alsojhaving an actuating connection With-the positiveand effective'. vvA's'in rack; *substantially :is-described. 'device,vthefneed o ffskilled-l'abor .16. :Glass-'drawing 'apparatiis, the eapi'sdon'e: avvay with. lifting mechanism, 'an airxsfu'pply, a1 control Many variations may-'be made in the-form valve for-thel air supply,' a.rack connected and arrangement of the valve-actuating 'eontothe valve, a gear 'engaging said rack and nection, tliem'eans fo-rimpartingltbe 'rapid' driven vby' `the' lifting mechanism', anda roi4 4 inovernent thereto to suddenly Iink'zrea'se thetat'ing member air' suppl-y 'and form' the' cap,' e t c., vvithoi'itv ranged '.to 'eect the yoperation is my previous valternate engagement comprising a departing from my invention'.v -janddisengagement of the rack and gear, l claim: [said member .also havin@ an actuatinofcon-w Glassdraiving apparatus having mea-ns, for -separatingfthe bait and glass .'re'ceptacle during-tle'drawing operation, f anairv sup- ,A

scribed. l ln-testiinony whereof, IV have hereunto set ply .having a'controlling valve, and connec my hand.' tions'betyveen the separating means-"and, the OLIVERE. MYNARD. fsaidfvalvefsaidconnections" comprising af' Witnesses:

. R. H. BELLMAN,

'andi means- 'for ANNA BELLMAN.

rigid l movable'- :.membei',

netion ivitlither-ack, substantially as de'V 

